content/test/data/indexeddb/transaction_run_forever.js

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 function test()
   6 {
   7   // Do not use indexedDBTest() - need to specify the database name
   8   var dbname = "doesnt-hang-test";
   9
  10   var request = indexedDB.deleteDatabase(dbname);
  11   request.onerror = unexpectedErrorCallback;
  12   request.onblocked = unexpectedBlockedCallback;
  13   request.onsuccess = function() {
  14     var request = indexedDB.open(dbname, 1);
  15     request.onerror = unexpectedErrorCallback;
  16     request.onblocked = unexpectedBlockedCallback;
  17     request.onupgradeneeded = onUpgradeNeeded;
  18     request.onsuccess = onOpenSuccess;
  19   };
  20 }
  21
  22 function onUpgradeNeeded()
  23 {
  24   // We are now in a set version transaction.
  25   debug('Creating object store.');
  26   var db = event.target.result;
  27   db.createObjectStore('store');
  28 }
  29
  30
  31 var objectStore;
  32 function onOpenSuccess()
  33 {
  34   var db = event.target.result;
  35
  36   debug('Creating new transaction.');
  37   var transaction = db.transaction('store', 'readwrite');
  38   transaction.oncomplete = unexpectedCompleteCallback;
  39   transaction.onabort = unexpectedAbortCallback;
  40   objectStore = transaction.objectStore('store');
  41
  42   debug('Starting endless loop...');
  43   endlessLoop();
  44 }
  45
  46 var loopCount = 0;
  47 function endlessLoop()
  48 {
  49   var request = objectStore.get(0);
  50   request.onsuccess = endlessLoop;
  51   request.onerror = unexpectedErrorCallback;
  52
  53   loopCount += 1;
  54   if (loopCount == 7) {
  55     // If we've already looped 7 times, it's pretty safe to assume
  56     // we'll continue looping for some time...
  57     debug("Looping infinitely within a transaction.");
  58     done();
  59   }
  60 }